Ordered and Abrupt fcc Fe/Cu 111Interface Observed with Angle-Resolved Photoemission

The electronic structure of fcc Fe/Cu 111 interface has been studied by angle-resolved photoemission with synchrotron radiation. The existence of the interface state and absence of intermixture between Fe and Cu atoms in the Fe/Cu 111 interface show that the Fe/Cu 111 system has an abrupt and ordered interface.